Manufacture of chenille yarn

ABSTRACT

Two chenille yarns each composed of at least two core threads twisted to secure projecting short lengths of chenille effect material are produced simultaneously on a machine which continuously supplies two individual core threads from bobbins mounted in a head through a stationary tubular spindle to a mandrel. One or more threads of chenille effect material are supplied from a bobbin that is mounted at a distance from the head via a stationary thread guide to a rotating thread guide arranged below and laterally of the core thread bobbins on a rotating hollow spindle surrounding the stationary core thread spindle. The rotation of the lower thread guide causes the chenille effect thread to rotate and spin out in a balloon shape around the core thread bobbins in an unobstructed tubular space provided. The rotating thread is wound in a spiral around the core threads on the mandrel and two further core threads are applied to the outside of the spiral from further core thread bobbins. The spiral is cut and the two pairs of core threads with chenille effect material between them are twisted into the desired yarn. The core thread spindle is kept stationary by magnetic attraction to an adjacent fixed portion of the machine across the unobstructed tubular space. The chenille effect thread bobbins can be replenished without halting the machine.

. States Patent .lubany [111 3,855,768 I [4 1 l) ec.24,1974

[ MANUFACTURE OF CHENILLE YARN [22] Filed: June 14, 1973 [21] Appl. No.1369,986

[30] Foreign Application Priority Data.

July 4, 1972 Spain 404853 [52 us. Cl. 57/24, 57/156 [51] Int. Cl D02g3/42 [58] Field of Search 57/24, 143, 156

[56] References Cited UNITED STATES PATENTS 817,965 4/1906 Eversmann57/24 1,558,179 10/1925 Keefer....' 57/24 2,408,898 10/1946 Wilmsen57/24 3,357,166 12/1967 McCarthy... 57/24 3,645,078 2/1972 Roberts 57/24Primary ExaminerJohn Petrakes I Attorney, Agent, or FirmSteinberg &Blake 57] ABSTRACT Two chenille yarns each composed of at least two corethreads twisted to secure projecting short lengths of chenille effectmaterial are produced simultaneously on a machine which continuouslysupplies two individual core threads from bobbins mounted in a headthrough a stationary tubular spindle to a mandrel. One or more threadsof chenille effect material are supplied from a bobbin that is mountedat a distance from the head via a stationary thread guide to a rotatingthread guide arranged below and laterally of the core thread bobbins ona rotating hollow spindle surrounding the stationary core threadspindle. The rotation of the lower thread guide causes the chenilleeffect thread to rotate and spin out in a balloon shape around the corethread bobbins in an unobstructed tubular space provided. The rotatingthread is wound in a spiral around the core threads on the mandrel andtwo further core threads are applied to the outside of the spiral fromfurther core thread bobbins. The spiral is cut and the two pairs of corethreads with chenille effect material between them are twisted into thedesired yarn. The core thread spindle is kept stationary by magneticattraction to an adjacent fixed portion of the machine across theunobstructed tubular space. The chenille effect thread bobbins can bereplenished without halting the machine.

16 Claims, 12 Drawing Figures PMENTEUUEW'M 3.855.168

SHEET OEUF 10 PATENTEI] DEC 24 I974 sum ouor 10 PATENTED0EB24I9T43,855,768

SHEEI GSUF 1O PATENTEB UEC24 I974 SHEET 07 0F 10 PATENTEB DEC 2 41974sum am 1o PATENTED [15124 I974 SHEU 190$ 30 MANUFACTURE OF CHENILLE YARNBACKGROUND OF THE INVENTION The machines utilized for the manufacture ofsuch yarns generally have a guide, conventionally constituted by twoendless bands or wires having two adjacent sections between which thecore threads are passed in parallel arrangement, the said wires or bands(or tapes) being so actuated that they entrain the core threads from oneto the other end of the guide, a twisting head mounted for rotation athigh speed about the assembly of the guide sections and the core threadsentrained by the latter and provided with one or more bobbins ofchenille effect material which is wound about the assembly, supply meansfor one or more further core threads for retaining on the wound chenilleeffect material, means for longitudinally severing the chenille effectmaterial spiral between the core threads, and conventional twistingmeans for twisting and rolling the two compound yarns which areseparated after severing.

As will be appreciated, the core threads exhibit apart from the helicalarrangement resulting from the twist imparted to the assembly, anessentially longitudinal unwinding effect in the chenille yarn produced;the chenille effect threads, on the other hand, exhibit a very muchlonger helical unwinding effect, due to the fact that they are woundabout the assembly constituted by the core threads and the guides forthe latter, and because the said guides retain them in such manner thattheir turns form a perimeter which is sufficiently long to afford thedesired length of chenille effect threads proper.

In the functioning of the machine, therefore, the consumption ofchenille effect material is very much greater than the consumption ofthe other two core threads. On the other hand, since the bobbins ofchenille effect material rotate at high speed between the closedcontours of the guide tapes or wires, there arise serious functionalproblems which may greatly reduce the production of the machine. Forexample, the chenille effect material, which is generally bulky, has tobe stored on the head bobbins which, for constructional reasons, must berelatively small and are rapidly depleted due to the high consumption ofthis material, so that it is necessary to repeatedly shut the machinedown in order to replenish the chenille effect bobbins; the mounting anddismounting of such bobbins, which have to be provided with adequatesafety devices, is generally toilsome and the high speed of rotation ofthe head carrying the chenille effect bobbins makes it difficult toadequately control rupture or termination of the associated ends, theresult of this being the production of considerable quantities of yarnwhich terminate defectively, before it is possible to detect any ofthese circumstances.

SUMMARY OF THE INVENTION It is the object of the present invention tosubstantially eliminate the disadvantages mentioned and to provide amachine for the production of chenille yarns, in which the bobbins orspools of material affording the chenille effect proper are located, bymeans of a special arrangement constituting a part of thecharacteristics of the machine, externally of the head for winding thesaid material onto the core thread in such manner that it becomespossible to successively knot bobbins of chenille effect materialwithout interrupting the functioning of the machine. The bobbins whichremain in closed disposition during the functioning of the machine,supply the inner first core threads onto which the chenille effectmaterial is wound, the capacity thereof being very much higher and theduration between successive insertions being longer for the changingthereof, since they constitute approximately only 15 percent of thecomposition of the finished thread against approximately percent ofchenille effect thread in the finished yarn. The external second corethreads are also endless i.e. they may be changed during operation.

The machine according to the present invention comprises, essentially,means for longitudinally guiding at least two inner first core threadsfrom core material bobbins or spools maintained in fixed positionrelative to the machine, means for rolling at least one chenille effectthread about the core threads and for guiding them from an externallydisposed creel while forming a balloon of rotating thread about the corethread bobbins, means for supplying external second core threadslaterally of the chenille effect material wound on the first two corethreads, means for cutting the winds of the chenille effect threadbetween the pairs or groups formed by one first core thread and oneexternal second core thread, and independent twisting and rolling meansfor the at least two chenille yarns formed at the cutting or severingmeans.

In a preferred embodiment of the invention, the machine has achenille-twisting spindle which is tubular and is supported inintermediate bearing devices having means for driving them in rotation,having at least one chenille effect material routing duct for guidingthe material from one of the ends to the other, and which debouches ontoone of the said ends eccentrically relative to the spindle, at least onethread guide mounted eccentrically on the opposite end of the spindle, astationary thread guide axially spaced from the preceding one in suchmanner that a chenille effect thread passing via both guides forms arotating balloon during the functioning of the machine, a guide spindle,also tubular and entraining at least one first core thread, beingmounted within the tubular orifice of the first spindle for rotationrelative thereto and being fixed relative to the machine, which guidespindle projects from the twisting spindle at the outlet end of thechenille effect material, thereby affording a mandrel for the windingonof the chenille effect material and at the opposite end a pin-supportingplate for bobbins or spools of first core thread feed means for theexternal second core threads at the sides of the chenille effectmaterial wound on the mandrel, and severing, twisting and winding-onmeans.

The guide spindle, disposed for idle rotation within the chenilletwisting spindle which rotates about it, may

be supported to be fixed relative to the remainder of the machine bymeans of support devices located downstream of the severing means forwound chenille, for example by means of an extended portion of thewinding mandrel secured to a stationary portion of the machine. Theinvention also provides a particularly simple means for maintaining theguide spindle stationary relative to the machine, whereby the assemblycomprising the guide spindle and the core bobbin carrying plate ismaintained fixed relative to the machine by electromagnetic or magneticmeans permitting the establishment of an annular space, having nophysical connection between assembly and machine, about the said plateand bobbins, and through which the chenille effect material balloonrotates freely. For example, the first core thread or bobbincarrying-plate may be provided with at least one permanent magnet, eachone being associated, when magnetic attraction is operative, with acomplementary magnet secured to a support which is stationary relativeto the machine and separated from the preceding one affording the spacefor passage of the chenille effect material balloon. The said support,preferably taking the form of a fixed annulus surrounding the plate, maybe provided with a tubular member extending about the assembly of thebobbins to afford a guide and means of protection for the balloon, ofrotating chenille effect material. On the other hand, in order toprevent contact of the balloon with the bobbins and devices associatedtherewith, the plate is also provided with a tubular member surroundingthe said bobbins and radially separated from the balloon-protectingmeans, to afford an annular space for passage of the latter.

The supply means for the external second core threads preferably has foreach side of the mandrel an endless belt or tape tensioned between aroller connected with means for driving in rotation and a fixed guideapplying it against the side of the mandrel against which tape there isapplied the first roller of a pair of entrainment rollers for conveyingthe severed and separated chenille yarns towards the associated twistingand windingon devices. The device may be provided with tensioning meansapplied against the inlet arm of the endless band and serving at thesame time as a guide roller for the external second core thread. On theother hand, the assembly comprising the roller and the guide for theendless band may be mounted to be adjustable for the purpose of varyingthe operative position thereof relative to the mandrel, for whichpurpose the first entrainment roller will also be adjustable formaintaining the coupling with the belt-driving roller and the followingentrainment roller.

For cutting the turns (spiral structures) of the chenille effectmaterial wound on the first core threads, there is preferably employed apair of circular knives driven in rotation and operating in alongitudinal cut formed in the end of the mandrel, being mounted insupports the position of which is adjustable relative to the saidmandrel.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal, elevationand conventional section of the assembly of a machine within theinvention;

FIG. 2 is a view similar to the previous one of the mechanisms foractuating the machine, shown in more detailed form;

FIG. 3 is a section in plan, taken in the plane IIIIII of the precedingFigure;

FIG. 4 is an elevational cross section taken in the plane IVIV of FIG.2;

FIG. 5 is a front elevation of the mechanisms for severing andentraining the chenille materials formed;

FIG. 6 is a plan view, partially in section, of the mechanisms of theprevious Figure;

FIG. 7 is a longitudinal elevational section of the assembly of the headfor winding-on the chenille material and for supplying the core threads;

FIG. 8 is a diagrammatic plan view corresponding to the previous Figure;

FIG. 9 is a section, in elevation, and also diagrammatic correspondingto the previous Figure, it being assumed that one of the bobbins forcore material has been removed;

FIG. 10 is a detail, drawn to a larger scale and in cross section, as anelevation, of the working zone of the machine, it being assumed that allthe threads have been withdrawn;

FIG. 11 is a view equivalent to the preceding one, showing solely thefirst core threads and external second core threads, and

FIG. 12 is a view equivalent to the two preceding ones, showing thesecond core threads and first core and chenille effect threads.

SPECIFIC DESCRIPTION OF A PREFERRED EMBODIMENT The machine shownillustrated is for the production of two chenille yarns 13 each composedof one first core thread and one second core thread twisted to entrappieces of chenille effect material. The machine has (FIG. 1) a boxstructure comprised by conventional structural elements affording twoindependent and superposed compartments 1 and 2 separated by anintermediate plate 3, each one whereof has a front plate 4 and 5respectively. The upper compartment 1 is closed above by means of apanel 6 and disposed within the box structures are various structuralpartitions such as 7, 8 and 9. The front plates serve as support meansfor the working elements of the machine; specifically, the upper plate 4carries devices for severing and entraining the chenille materials,indicated in general by reference numeral 10, and the head 11 forwinding-on the material or chenille effect thread 25, the lower plate 5carrying two pins or spindles 12 at which the two chenille yarns formed(13 in FIG. 12) are twisted and wound-on in the same manner as in aspinning frame, for example of the ring-spinning type. The upper wall 6has a central support 14 provided with arms 15 supporting four supports16, two superposed vertically at each side of the machine, for cones l7supplying two external second core threads 18 which pass viaconventional tensioning and control devices designated by the generalreference number 19 and connected by means of arms 20 to a supportcolumn 21. A rotary creel support 22 mounted externally at the head 11at the rear portion of the panel 6 has supports 23 receiving cones 24supplying the chenille effect thread 25; the latter travels also viatensioning and control devices indicated with the general referencenumeral 26 and mounted on an arm 27 which is secured to the support 14.

The general mechanism for operating the machine includes:

l. a mechanism for actuating a chenille effect material winding-on head;2. mechanisms for actuating devices for severing and entraining thechenille yarns formed; 3. mechanisms for actuating the spindles fortwisting and winding the chenille yarns formed; and 4. a mechanism forvarying the folding-down of the chenille yarns on the spindles. Thesefour mechanisms will be described separately, briefly and in the orderindicated.

1. Actuation of the head The main element of the head for winding-on thechenille effect material includes a rotatable winding-on spindle 28(FIG. 2) which is supported for rotation by means of bearings 29 on asupport 30 secured to the upper end plate 4 and having the shape of afork in such manner that it is possible to arrange between its arms adrive pulley 31 secured to the spindle 28.

The pulley 31 is connected by means of a drive belt 32 with a furtherpulley 33 secured to the upper end of a vertical shaft 34 mounted bymeans of bearings 35 in a spindle-carrier 36 secured by means of screws37 to the intermediate partitions 7, 8. The spindle-carrier 36 projectsbelow the latter partition 8 and the shaft 34 projecting therefromterminates in a pulley 38. The latter receives a transmission belt 39passing about a pulley 40 secured to a further vertical shaft 41supported on the one hand by means of a speed reducer 42 secured to thepartition 8 and the purpose of which will be discussed later and at theother to the drive motor 43 mounted on a plate in the lower partition 9.

It will be appreciated that what are concerned here are two transmissionsystems for stepping-up speed, in such manner that the winding-onspindle may be driven with a number of revolutions sufficiently high tosatisfy manufacturing necessities. Preferably, the motor 43 is connectedto be driven in the two directions of rotation, so as to permit theemployment of chenille effect thread whether s-twisted or z-twisted.

2. Actuation of the devices for severing and entraining chenille effectthreads The output of the speed-reducing means 42 (FIG. 2) isconstituted by a shaft 44 extending through the plate 3 via bearings 45and terminating above the latter in a toothed wheel 46. The lattermeshes with a complementary wheel 47 secured on a shaft 48 arranged forfree rotation in bearings 50 mounted in the plates 7 and 3 and on whichthere is keyed for sliding a displaceable train 51 comprising twoopposite conical pinions 52 and '53 between which is disposed acomplementary pinion 54; the displaceable train 51 may be disposed inthe position permitting engagement of any one of its two pinions 52, 53with pinion 54, by means of conventional actuating devices (not shown).

The pinion 54 (FIG. 3) is secured to a short shaft 55 arranged to rotatein bearings 56 mounted on a support 57 secured by means of screws 58 tothe partion 7; fast on the said shaft is also a cylindrical pinion 59,arranged laterally of the pinion 54, and a sprocket wheel 60 on the sideopposite the support. The said support affords a further bearing housing(FIG. 3) in which is mounted, by means of ball bearings 62, a furthershaft 63 the axis of which extends parallel to shaft 55 and which isprovided with a pinion 64 meshing with pinion 59, and a further sprocketwheel 65.

From each of the wheels 60 and 65 extends a chain 66 coupled with anassociated wheel 67 fast with a shaft 60 supported by means of two ballbearing supports 69 secured to the plate 3 by means of screws 70. Thetwo shafts 68 are arranged parallel to each other on both sides of thedrive device 54 and 65 and extend forwardly where they terminate infront couplings 71 arranged to receive complementary elements 72 and 72aconstituting a part of mechanisms described in greater detail later andwhich are mounted on the inner face of the end plate 4.

The plate 4 has secured to its inner face by means of screws 73,perpendicular thereto and adjacent the lateral walls 74 of the body 2, aplurality of pins or spindles 75 each terminating in abutment heads 76and mounted to slide freely on supports 77 secured to the said lateralwalls. In this manner, once the drive belt 32 has been withdrawn, theplate 4, with all the mechanisms mounted thereon, can be displacedforwardly to render accessible the mechanisms of its rear face; in theworking position shown, the plate may be locked in position by means ofconventional locking devices (not shown).

Each of the coupling elements 72 and 72a is a tubular member mounted forrotation by means of anti-friction bearings 272 on a pivot 273 securedto the plate 4 by means of screws 274. The member 72 constitutes atoothed wheel 275 for a toothed belt 276 which, through the agency ofassociated tensioning means 277 (FIG. 4), actuates a complementary wheel278 secured to a shaft 236 (FIG. 6) for actuating the devices forentraining the formed chenille yarn on the right hand side of themachine (to be described later). The symmetrical elements on theleft-hand side and the severing devices are actuated from the member 72aaffording two wheels or pulleys 279 and 280 over which travel flexibletransmission or drive elements 281 or 282. The transmission 281 actuatesa wheel 283 for the entrainment devices and the transmission 282actuates a wheel 284 secured to the shaft 221 which is mounted forrotation by means of anti-friction bearings on the support 222. The twotoothed or chain belts 281 and 282 are simultaneously tensioned by atensioning roller 286 mounted to be adjustable by conventional means.

The actuation path extending from the output shaft 44 of thespeed-reducing means 42 as far as the mechanisms of the rear portion ofthe plate 4 will be clearly perceived. Depending on the position of thedisplaceable arrangement 51 relative to the pinion 54, the latter willbe driven in an associated direction, but in practice this reversingdevice is utilised for actuating the mechanisms for entraining andsevering the chenille material always in the same direction,independently of the direction of rotation selected for the motor 43, soas to make it possible to employ threads twisted in the z or sdirection.

3. Actuation of the twisting spindles The spindles 12 (FIG. 2) are suchas are conventionally employed in spinning frames and there are twothereof for each chenille-forming head, one for each yarn produced,being mounted on supports 78 secured to the end plate 5 and over thepulley 79 thereof extends a drive belt 80 driven from pulley 81 disposedbelow the partition 9 and constituting a portion of a vertical shaft 82mounted on an anti-friction bearing support 83 fast with the partition 9by means of screws 84 and projecting above the same, where it terminatesin a pulley 85. The latter is connected by means of a transmission belt86 with a supplementary pulley 87 sethe same direction at a speed whichis a multiple of that of the motor.

The pulley 81 is replaceable, thereby making it possible to vary thespeed of the spindles and, consequently, the number of twists per metreof chenille yarn.

For beaming the chenille yarn 13 forming the bobbin or package 88 thereis employed a ring-spinning device 89 mounted in conventional manner ona balancing plate 90 which is displaceable by means of bearing sleeves91 on two vertical guide bars 92 secured to the support 78 and to aplurality of upper support means 93 fixed to the end plate 5.

4. Chenille-beaming mechanism The balance plate 90 (FIG. 2) hasarticulated to it, by means of a pivot 94, an arm (which has been giventhe general reference numeral 96) oscillating on the pivot 95 andconstituted by three elements 97, 98, and 99 which are telescopicallycoupled together. The central portion 98 is fork-shaped, the base of thelatter having a guide cap 100 on which slides axially the end portion 97designed as a cylindrical pin or spindle. The ends of the fork 98 areconnected by means of a crossbeam 101 projecting on both sides, toafford two sleeves 102 in which slide two associated pins or spindlesarticulated in common to the pivot 95 constituting the portion 99 of theoscillating arm. Articulated by means of pins or studs (not shown)between the arms of the fork member 98 is a nut 104 mounted for slidingon a spindle 105 the ends of which are supported by means of bearinghousings 106 mounted on the partitions 8 and 9.

Actuation of the spindle is effected from the output shaft 44 of thereducing means 42 through the agency of pulleys 103 and 107 connected bymeans of associated transmission belts 108 and 109 with the associatedpulleys of an intermediate train 110 fast with a pivot 111 rotating in abearing housing 112 mounted on the partition 8. This actuation may alsobe carried into effect from a further speed-reducing means appropriateto the speed of the balancing means (not shown).

A portion of the length of the spindle 105 is formed with a doublehelical screwthread 113 having opposite windings connected in continuousmanner, and the nut 104 has a follower finger" 114 engaging with thegroove formed in the said screwthreads, the assembly being aconventional arrangement suitable to produce the result that the saidfinger changes automatically, and without interruption of continuity,from the one to the other screwthread at the ends thereof.

With this arrangement, the movement of slow rotation of the shaft 44,still further reduced by the transmission systems described, or by anindependent reducing means, is transmitted to the spindle 105. Therotation of the spindle produces the vertical alternating displacementof the nut 104, and the latter the oscillation of the arm 96, duringwhich movement the central portion 98 follows the rectilineardisplacement of the said nut and the telescopic couplings thereof withthe parts 97 and 99 absorb the variations in the distances taking placebetween the said central portion and the two articulation pivots 94 and95. Consequently, assuming that the pivot 95 is in the position shown inthe Figures,

the balance plate will be displaced in order to cover the entire beamingheight of the package 88.

On the other hand, the pivot constitutes a part of a carriage 115 whichis guided on guideways 116 supported by means of supports 117 secured tothe partition 9 by screws 118. The said supports 117 constitute bearingsin which rotate the ends of a screwthreaded spindle 119 installed in arecess in the slide and with the screwthread of which there is coupled afollower 120 fast with the latter. The rear end of the spindleterminates in an escape wheel 121 with which co-operates a conventionaladvance pawl device indicated diagrammatically at 122 and whichoscillates on the spindle end and is actuated by means of a link rod123. The latter is articulated to an arm 124 secured to one of the endsof a pivot 125 supported by the supports 126 secured to the partition 9.The opposite end of the said pivot is connected, by means of a furtherarm 127 and a link rod 128, with a rod 129 vertically guided in anorifice formed in the partition 9 and a lateral projection 130 on theadjacent support 126, the arrangement being such that the upper endthereof remains within range of the crossbeam 101 at the lower end ofthe oscillation travel path of the arm 96.

Shortening of the travel path of the balance or rocker means isvariable, inasmuch as there is provided a mechanism in which it ispossible to effect a selection with regard to engagement of one or moreteeth of the wheel, to afford withdrawal thereof. This is indispensiblefor the beaming of various types of chenille which may be coarser orfiner, so as to always maintain the same conicity in the package thereis also an electric end-of-travel stop means.

In accordance therewith, on every occasion that the balance or rockerplate 90 terminate a travelpath in the downward direction, the rod 129is urged downwardly (a spring, not shown, urges it upwardly) andproduces, via the transmission mechanisms described hereinabove, theadvance of the wheel 121 by the amount of one tooth. With successivetravel of the balance plate 90, the carriage or slide 115 is displacedtowards the right at FIG. 2 for rotation of the spindle 119, in suchmanner that the pivot 95 is spaced-away progressively from the nut 104and the rocker plate describes a travel path which is progressivelyshorter, thereby giving rise to the conventional formation of thepackage.

In order to return this mechanism to the starting position shown, themachine has a crank 131 at its forward position, connected to a pivot132 supported for rotation by means of supports 133 and terminating in asprocket wheel 134 connected, by means of a chain 135 with an associatedwheel 136 secured to the end of the spindle 119.

The winding-on head 1 1 constituting the main part of the machine isshown in FIG. 7 et seq. and will now be described in detail.

Secured to the fork 30, at the upper part thereof by means of screws137, is a member 138 taking the form of a dish or cup open at its frontportion and upwardly extended by a cylindrical tube 139.

The spindle 28 is mounted in the housings of the antifriction bearings29, by means of pairs of external antifriction bearings 140, secured bymeans of screws 141, and internal anti-friction bearings 142 betweenwhich labyrinth seals are formed. Through the said spindle 28 extendsaxially an orifice 143 extending over the entire length thereof andhaving two longitudinal apertures 144 extending from a position near theupper end thereof and debouching at the opposite end, being locatedsymmetrically opposite each other in the said spindle, primarily inorder to further facilitate passage of the chenille effect threadthrough if desired each one of the two and, secondarily,'formechanically balancing the spindle.

Provided near the upper end of the spindle 28 is a flange 145 affording,above, a seat on which is secured, by means of an annular plate 146 andscrews 147, a sheet metal dish or cup 148 on the radially turned-overedge of which there are mounted in appropriate orifices, pairs ofopposite thread guides 149 located within the annular portion of themember 138. The assembly comprising the winding-on spindle and the plateor dish 148 with the thread guides 149, consequently rotates at the highvelocity afforded by the belt 32 and drive pulley 31.

The two ends of the axial orifice 143 are widened to afford seats foranti-friction bearings 150 supporting a tubular guide spindle 151 withinthe orifice of the spindle 28 for free rotation relative thereto. Thespindle 151 is maintained in the axial position against the antifrictionbearings 150 by means of an upper widened portion 152 and a hollow nut153 (FIG. screwed at its lower end, the nut 153 also secures in positionthe flange 154 of a mandrel-carrying member 155 fitting into a terminalwidened portion of the orifice 153 of the guide spindle and formed withtwo longitudinal opposed grooves 157 communicating above with theinterior 156 of spindle 151, the lower end bearing in a singletransverse recess 158. Secured in the recess 158 by means of atransverse key or pin 159, is a mandrel (or spike) 160 constituted by aplate widening out from the location from which it extends from themandrel carrier to form a zone of wedge-shaped (161) followed by astraight and narrower zone 162 formed at its free end with alongitudinal incision or slot 163, perpendicular to the plane of theplate.

It should be noted that the projecting portion of the mandrel-carrier155 is covered by a cap 164 in prolongation of the ring or annulus 142from the lower portion of the spindle. The wall of the cap 164 is formedwith longitudinal conduits 165 aligned with the conduits 144 in thewinding-on spindle and debouching in the immediate proximity of themandrel.

The widened portion 152 of the upper part of the guide spindle 151 hasan intermediate step 166 provided with a keyed pin 167, and ascrewthreaded terminal section 168; in the first thereof there isfitted, by means of a spline associated with the said pin, a plate 169secured in position by the nut 170 coupled to the terminal section 168,the diameter thereof being slightly smaller than the interior of theannular member 138, in such manner that there is between both an annularspace 171 at which are disposed opposite each other, underneath, thethread guides 149. The guide spindle 151 and bobbin-carrying plate 169are held stationary in position relative to the machine. The edge of theplate 169 has a seating 172 in which is engaged a permanent magnet 173,and the edge of the member 138, has at the same level, an externalseating 174 in which is secured a further permanent magnet 175, by meansof a resilient pressure device 176. The member 138 is made of aluminum,bronze or other nonmagnetic material, and the seating 174 is designed insuch manner that the residual wall thickness is small, so

that if the two magnets described are arranged with poles of directedtoward each other sign arranged opposite, they will exert between theman attraction force adequate to maintain the plate 169 in the positionof radial alignment of the two magnets, despite the small entrainmentaction of the anti-friction bearings on the guide spindle 151, due tothe rotation of the winding-on spindle 28. Naturally, it is possible toprovide additional pairs of permanent magnets, if this should benecessary. In this manner, the plate 169 is maintained permanentlystationary within the member 138 and relative to the machine, due to themagnetic action between the two magnets described, and the rotatingthread guides 149 are able to entrain the chenille effect thread 25,forming a balloon 199 of rotating thread about the plate 169 between theupper thread guides 175a fixed to the column 21 (FIG. 1) and the uppermouth of the duct 144 through which is engaged the forward passage forthe thread from guide 149 of the rotary plate 146.

The plate 169 has, secured to its upper face, a cylindrical protectiveplate 176a extending upwardly to form, on the one hand, a receptaclewithin which are disposed two core thread (177) bobbins 178 and, on theother hand, a protective means preventing the chenille effect threadballoon 199 from engaging the said thread bobbins 178. The two bobbins178 are mounted in identical bobbin-carriers, one of which is describedhereinbelow.

For each bobbin-carrier, the plate 169 has a seating 179, open at thelower face of the plate and in which is fitted an anti-friction bearing180 mounted on a spindle pivot 181 by means of a retaining ring 182. Thetwo anti-friction bearings are maintained in position, above by plates183 and below by an annular plate 184 which, simultaneously seals thesaid seating; these elements are secured together, through the plate169, through the agency of screws 185. The spindle pivot 181 has,immediately above the plate 183, a flange 186 and disposed between thesetwo elements is a friction washer 187. On the other hand, the saidspindle has formed axially through it an orifice 188 provided with anupper widened portion 189 through which fits a pin 190 having anactuating head 191 formed with a threaded end 192 engaging in acorresponding tapped orifice formed in the annular plate 184; disposedbetween the head 191 of the pin and the bottom or end face of thewidened portion 189 is a helical compression spring ensuring adequatedeceleration of the bobbin.

The two first core threads 177 extending from the bobbins 178 are takenup by an entrance 194 formed at the free end of a tube 195 secured tothe end of the section 168, in such manner that it constitutes acontinuation of the conduit 156. The said entrance 194 is lo catedhalfway up the two bobbins and, in order to smooth the changes indirection of the thread leaving each one thereof, the same is returnedto travel about a guide rod 196 secured to the plate 169 and providedwith two abutment flanges 197, as shown in FIGS. 8 and 9.

For a better understanding, a description will now be given of the modeof functioning of this part of the machine i.e. the winding-on headwhich has been given the general reference numeral 11 in FIG. 1.

Two first core threads 177, travelling from the bobbins 178, mounted onthe spindle pivots 181 at the upper portion of the containers 139 and176a, are

threaded through the entrance 194, the tube 195, the conduit 156 andeach one thereof is threaded through one of the grooves 157 formed inthe mandrel-carrier 155. Subsequently, they extend parallel at the endthereof and travel along the edges of the mandrel or guage 160 (FIG.11). To facilitate description, the functioning is restricted to thispoint.

The chenille effect thread or material 25, proceeding from thehigh-capacity cones 24 knotted in endless form, travelling through thedevices 26, travels via the fixed thread-guide 175a, the inner portionof the container 139, the annular space 171, the rotatable threadguide149, the conduit 144 and the conduit 165, whereupon it emerges throughthe end of the cap or sleeve 164 (FIG. 7).

On setting the machine in motion, the belt 32 drives the pulley 31 androtates, at high speed, the winding-on spindle 28 and the dish 148having the thread guides 149. Nevertheless, the assembly constituted bythe guide spindle 151 and the plate 169 with all the elements mountedthereon, and which is totally free within the winding-on spindle 28,through intermediary of the anti-friction bearings 150, is maintainedstationary due to the mutual attraction exerted between the permanentmagnets 173 and 175. Consequently, the portion of thread 25 comprisedbetween the upper fixed thread guide 175a and the upper mouth of theduct 144 is driven in rotation about the entire structure supported bythe winding-on spindle 28, and the high rotational velocity produces aballoon 199 of thread rotating about the said structure along theannular space 171.

At the outlet of the winding-on spindle 28 (FIG. 12) the chenille effectthread turns 198 are wound-on about the wedge-shaped portion 161 of themandrel 160 and the two first core threads 177 which are displaceddownwardly in positions adjacent the edges of the mandrel. It will berecalled that the mandrel 160 is rigidly secured to the guide tube 151and that, consequently, it is fixed relative to the machine, whereas thewinding-on cap or sleeve 64 rotates about it. The chenille thread turns198 forming about the mandrel under predetermined tension derived fromwinding-on are entrained downwardly due to the continuous displacementof bands 250, in such manner that the tension is immediately relievedwhen the turns reach the narrower zone 162, starting from which thethreads are subjected to the subsequent entrainment and severingoperations the result of which is the obtaining of the final chenilleyarns.

It should be noted that the chenille effect thread 25, which is consumedto the greater extent in the formation of the final yarn, both because,generally speaking what is concerned is a bulky thread and also becausethe unwinding thereof per unit length of final product is much greaterthan in the case of the core threads, thereby constituting the mostfrequent cause of shutdown in the known machine, for the replenishmentof the supply bobbin 24, proceeds in the present machine from theexterior of the winding-on head 11 and can be supplied in continuousform by cones such as the cones 24 which are large-capacity cones andthe ends of which may be successively knotted, in such manner that it isno longer necessary that there should be any shutting down for thereplacement of the bobbins 24 of the chenille effect material.

On the other hand, those core thread bobbins 178 which are notaccessible from the exterior of the head 11 during the functioning ofthe machine, since they are surrounded by the chenille effect threadballoon 199 are relatively fine and the consumption thereof ispractically equal to the production of final chenille yarn so that thebobbins 178 although they are relatively smaller, have sufficientcapacity for a plurality of final product packages and do not requirefrequent changing.

A further important feature which it is necessary to take into accountresides in the fact that this machine lacks large centrifugal massesoperating at high rotational speed, as in the case of those knownmachines in which a plurality of bobbins of chenille effect threadrotate about the core threads. Neither does the replenishment of thebobbins which are inaccessible during functioning (the core threadbobbins 178 in the present machine) make it necessary to dismount anypart of the machine or to cut the material undergoing formation, asoccurs in the known machines when the chenille effect material issupplied from large-capacity bobbins through the interior of the core ofwhich the core threads are inserted, as also the associated guidedevices therefor.

To the chenille effect material wound onto the core threads 177 asdescribed above are added two external second core threads 18, one oneach side to form two pairs of one first and one second core thread,guided by thread guides 200 (FIGS. 10-12) secured to both sides of thelower arm of the fork 30, and when the material reaches the incision 163of the gauge 160, it is cut, by devices to be described later, in suchmanner that each turn of chenille effect material is converted to twosegments, each one of which is retained, at an associated side of thecutting devices between the inner core thread 177 and the external corethread 18 of each of the two pairs. The two spun yarns formed in thismanner are separated and stretched by the devices described later andare fed to the twisting and winding-on devices which have been given thegeneral reference numeral 201; each pair of first and second corethreads is mutually twisted retaining between them the segments ofchenille effect material.

Referring to FIG. 5, general reference numeral 202 designates theassembly of the cutting device and general reference numeral 203designates each one of the separating and entrainment devices, which areidentical and are symmetrical relative to a median longitudinal planeextending through the axis of the winding-on head 11.

Arranged for vertical sliding on a slideway 204, secured on the endplate 5 in such manner that its axis is vertical, is a carriage or slide205 the vertical position of which may be varied by means of aconventional threaded spindle device 206 provided with an actuating knot207 and rotating on the slideway, being furthermore coupled with a nutfast with the carriage or slide. The front portion of the slide 205affords a horizontal and transverse slideway 208 (FIG. 2) on which isadapted to slide a second carriage or slide 209 the transverse positionof which is adjustable by means similar to those previously describedand whereof there is shown in HG. 5 only the actuating knob 210. Fromthe front face of the slide 209 projects a slideway having a horizontallongitudinal base 211 and on which is mounted, in the same manner, to becapable of sliding and to be adjustable by means of the knob 212, thesupport shown at 213. The latter has a large central incision 214 inwhich is articulated to a vertical plane, by means of a pivot 215 (FIG.2) an arm 216 which is cranked upwardly and at the end of which there ismounted for rotation on a pivot 217 a circular knife 218.

The arm 216 has a working position which can be fixed by means ofconventional locking devices and is shown in FIGS. 1 and 2, according towhich the knife 218 is introduced to a slight degree into the slot 163in the gauge 160. The said arm may, however, be designed to oscillateforwardly in such manner that the knife is spaced away from the gauge,in order for example to replace the latter.

A similar knife 219 is associated with the knife 218 describedhereinabove, in such manner as to afford a pair of severing means withinthe slot 163. The said knife 219 is mounted on a block 220 secured tothe end plate (FIG. 2). The two knives are actuated via transmissionarrangements (to be described later) from the shaft 221 mounted forrotation in an anti-friction bearing arrangement 222 secured by means ofscrews 223 to the end plate 4 (FIG. 3).

Each one of the stretching or drawing devices 203 includes a base block224 secured by means of screwing (not shown) to the front face of theplate 4 and on which is secured a plate 225 (FIG. 6) constituting adovetail slideway (or equivalent) for a block 226 which islongitudinally displaceable, for which purpose the free end thereof hasa seating in which is mounted to be retained against axial displacementthe end of an adjustment screw 228 engaged by a screwthread in a support229 secured to the block 224.

The rear face of the block 226 has a longitudinal cavity 231 and two endorifices establishing communication between the cavity and the outerface thereof, thereby forming housings for anti-friction bearings 232and 233 maintained in position by means of a cover plate 234. Theanti-friction bearings 233 support for rotation the shaft 236 and theanti-friction bearings 232 support for rotation a further shaft 235;both shafts carry, within the cavity, a plurality of chain pinions 237and 238 which are connected for rotation by means of a chain 239. Theshaft 236 extends along a neck 242 extending from the rear face of theblock 226 and extending through the plate 225, the block 224 and the endplate 4, in aligned, wide orifices, reaching the interior of the machinehousing where they terminate in the wheels 278 and 283 describedhereinabove.

The outer ends of the shafts 235 and 236 carry, secured by means ofscrews 243, a plurality of rollers 244 and 245 Mounted for freeoscillation on the pivot of each one of the rollers 244, nearest thecentre of the machine, is a plate 246 (FIG. 5 and 10) provided with twodiametrally opposite arms 247 and 248, the first one thereof beingcurved downwardly and forming a shoe 249 by means of which there isconveyed an endless, flexible band 250 passing about the roller, in theposition adjacent the constricted portion 162 of the gauge 160, wherebythe said shoe has a surface portion 251 which is straight and is locatedopposite the gauge. The further arm 248 has a slide orifice 252 in whichmoves a screw 253 engaged in a tapped orifice in the cover plate 234.This device permits adjustment of the shoe in the desired form relativeto the gauge, for example on replacing the latter by another ofdifferent width for the production of a chenille yarn of differentvolume. A stud 254, secured to the arm 247, bears against the upper runof the endless belt 250 for imparting tension thereto and,simultaneously serves as guide means for the introduction of theexternal second core threads 18, as will be seen in FIGS. 11 and 12. Ifdesired, the belt 250 may be formed with a fine longitudinal groove (notshown) in the face receiving the said thread, the purpose thereof beingto provide for the guiding thereof, over the entire travel path thereof,in contact therewith.

An intermediate roller 255, provided with a rim of rubber 256 or otherresilient material, is mounted for idling on a pivot 257 fast with acarriage or slide 258 adapted to be displaced in a slideway 259 securedto the cover 234 (FIG. 5) in such manner that it is able to penetrate toa greater or lesser degree between the rollers 244 and 245, to adjustitself with the latter as a function of the entrainment of the wovenchenille yarn 13 which is taken between the rollers, as shown in FIGS.12 and 5.

The slide 258 has a slot 260 in which is operative a screw 261 by meansof which it is possible to establish the desired position of adjustment.The said roller 255 may also be pressed against the rollers 244 and 245by means of a spring, thereby always applying the necessary pressure.

The mode of functioning of this part of the machine will not requireexplanation. The two chenille yarns 13 formed are supplied to thetwisting and winding-on devices 201 in the conventional manner, directlyfrom the nip afforded by the rollers 245 and 255 or through intermediaryof a balloon-limiting thread guide (not shown).

The machine may be completed with conventional optional accessorydevices.

For example, FIG. 1 shows that there is secured to column 21 a support262 on which is secured an arm 263 extending upwardly and terminating ina ball-joint 264. Mounted on the ball-joint 264 is a mirror 265 adaptedto be orientated in such manner that the machine operator is able to seethe charging state of the bobbins 178 from the front of the machine. Alever 266, secured to the said ball-joint, serves for raising the mirrorin order to make the interior of the receptacle 176a accessible, when itis necessary to replenish any of the said bobbins and, at the same time,to lift a protector 267 preventing the introduction of the hands duringoperation. As a safety measure, the arm 263 is articulated to thesupport 262 with a degree of resistance less than the force necessaryfor actuating the ball-joint 264, so that, on proceeding to the raisingof the mirror and of the protector, the arm oscillates towards theright-hand side in the Figure and actuates a microswitch 268 connectedin the control circuits of the drive motor 43, in such manner thatfunctioning of the machine is halted, there being simultaneouslyintroduced 139 and 176a a stud locking the said members in order toprevent that, on changing the inner bobbins, the arrangement 176arotates undesirably on its pivot.

It is also possible to provide standard or conventional controlarrangement for interrupting functioning of the machine in the event ofrupture of any of the threads, for example detectors 269, 270 for theretaining core and chenille effect threads respectively and similarcontrols for the internal core threads. Reference numeral 271 designatesa pilot light indicating at a distance when the machine has been shutdown in consequence of the action of any of these control arrangements.

As an alternative to the magnetic device 173, 175 for maintaining theguide spindle 151 and plate 169 stationary relative to the machine theremay be provided an extension of the guide spindle at its lower end tobelow the severing devices 218 and to secure this to a lower part of themachine. This extension may be the two parts of the mandrel 160 at eachside of the slot 163 in which the severing knife 218 acts.

The machine may be modified to supply more than two first and secondcore threads.

The invention in its broader aspect is not limited to the specificembodiment herein shown and described but changes may be made within thescope of the accompanying claims without departing from the principlesof the invention.

What is claimed is:

1. A machine for the manufacture of chenille yarn comprising a. at leasttwo core thread bobbins;

b. means for longitudinally supplying at least two first core threadsfrom the core thread bobbins;

c. a supply creel for chenille effect thread, said supply creel beingsituated remote from said bobbins at a freely accessible location;

d. winding-on means for conveying the chenille effect thread from thesupply creel, forming a balloon of rotating chenille effect thread aboutthe core thread bobbins and winding the rotating chenille effect threadaround the longitudinally supplied first core threads;

e. feed means for supplying at least two external second core threadslaterally to the wound-on chenille effect thread around the said firstcore threads to form at least two two pairs of core threads composed ofone first and one second core thread;

f. means for severing the turns of the chenille effect material betweenthe pairs of core threads; and

g. twisting and winding-on means for twisting each pair of core threadsinto a chenille yarn.

2. A machine for the manufacture of chenille yarn comprising a. at leasttwo core thread bobbins maintained in a fixed position;

b. means for longitudinally supplying at least two first core threadsfrom the core thread bobbins;

c. a supply creel for chenille effect thread;

d. winding-on means for conveying the chenille effect thread from thesupply creel, forming a balloon of rotating chenille effect thread aboutthe core thread bobbins and winding the rotating chenille effect threadaround the longitudinally supplied first core threads;

e. feed means for supplying at least two external second core threadslaterally to the wound-on chenille effect thread around the said firstcore threads to form at least two pairs of core threads composed of onefirst and one second core thread;

f. means for severing the turns of the chenille effect material betweenthe pairs of core threads; and

g. twisting and winding-on means for twisting each pair of core threadsinto a chenille yarn,

the winding-on means comprising a tubular rotatable winding-on spindle,bearing devices supporting the Winding-on spindle for for rotation, anddrive means for driving the winding-on spindle in rotation;

at least one duct in the winding-on spindle debouching at one end of thesaid spindle eccentrically of the said spindle;

at least one first thread guide mounted eccentrically at an opposite endof the said winding-on spindle and laterally of the core thread bobbinsso that a chenille effect thread guided through the first thread guideand through the said duct is rotated about the core thread bobbins byrotation of the winding-on spindle;

a fixed second thread guide axially situated spaced from the firstthread guide so that a chenille effect thread guided through the fixedsecond thread guide to the laterally disposed rotatable first threadguide will form a balloon shape on rotation of the first thread guidearound the core thread bobbins;

a tubular guide spindle for the first core threads mounted in thetubular winding-on spindle to be relatively rotatable thereto;

means for maintaining the tubular guide spindle stationary relative tothe machine on rotation of the winding-on spindle;

a mandrel on one end of the guide spindle projecting from the tubularwinding-on spindle at the end debouching the chenille effect material sothat first core threads guided through the tubular guide spindle layagainst the mandrel and debouching chenille effect thread is wound bythe rotation of the winding-on spindle around the mandrel and the firstcore threads;

a core-carrying plate mounted on an opposite end of the spindle for thefirst core thread bobbins; and

feed means for supplying the said second core threads to the mandrellaterally of the wound-on chenille effect thread.

3. A machine according to claim 2 wherein the guide spindle is mountedfor idling within the winding-on spindle.

4. A machine according to claim 3 wherein the guide spindle is prolongedupstream of the wound-on chenille effect thread affording means forsecuring to a stationary part of the machine.

5. A machine according to claim 4 wherein the means for securing theguide spindle are constituted by prolongation of the mandrel forwinding-on the chenille effect thread.

6. A machine according to claim 3 wherein the guide spindle ismaintained stationary by magnetic or electromagnetic means exerting aforce between the assembly of the guide spindle and the core-carryingplate, and a part fixed to the machine which surrounds the said assemblyfor maintaining the latter stationary, there being a continuous annularspace thereabout, through which annular space the chenille effectmaterial balloon rotates freely.

7. A machine according to claim 6 wherein the corecarrying plate isprovided with at least one permanent magnet, associated, when magneticattraction takes place, with a complementary magnet secured to the fixedpart surrounding the assembly.

8. A machine according to claim 7 wherein the fixed part surrounding thecore-carrying plate assembly is in the form of an annular body.

9. A machine according to claim 8 wherein the annular body surroundingthe core-carrying plate is prolonged upwardly to afford a protectivetube and guide for the balloon.

10. A machine according to claim 9 wherein the core-carrying plate has atubular body surrounding the core bobbins and radially separated fromthe balloonguiding tube, forming with the said guide tube an annularspace for passage of the rotating balloon.

11. A machine according to claim 2 wherein feed means for the externalsecond core threads is, at each side of the wind-on mandrel, an endlessbelt maintained under tension between a roller connected with means fordriving in rotation and a fixed guide guiding it adjacent the side ofthe mandrel, against which belt there is applied a first roller of apair of drive rollers for entraining the severed and separated chenilleyarns to the associated twisting devices.

12. A machine according to claim 11 which includes tensioning meansapplied against the inlet run of the belt at the guide, and which formsconveying means for the external second core thread.

13. A machine according to claim 11 wherein the assembly of the rollerand endless belt guide is mounted to be adjustable for varying theworking position of the belt guide relative to the mandrel.

14. A machine according to claim 13 wherein the first roller of thedrive pair is also adjustable for maintaining the coupling thereof withthe roller for actuating the belt and the second roller of the drivepair.

15. A machine according to claim 1 wherein the means for severing thechenille effect material are a pair of circular knives, mutuallyassociated and driven in rotation, and which are operative in alongitudinal slot formed in the end of the mandrel, being mounted insupports the position of which is adjustable relative thereto.

16. A method of manufacturing chenille yarn which includes supplying atleast two first core threads from bobbins, supplying at least onechenille effect thread from a freely accessible fixed bobbin situatedremote from the core thread bobbins, causing the chenille effect threadto rotate around the core thread bobbins in a balloon-like manner andapplying the rotating thread around the two first core threads to form aspiral, supplying at least two second core threads to the outer surfaceof the spiral so as to form at least two pair of core threads comprisingone first thread and one second thread, severing the spiral chenilleeffect thread between the two pairs of core threads and twisting thepairs of core threads to form two chenille yarns.

1. A machine for the manufacture of chenille yarn comprising a. at leasttwo core thread bobbins; b. means for longitudinally supplying at leasttwo first core threads from the core thread bobbins; c. a supply creelfor chenille effect thread, said supply creel being situated remote fromsaid bobbins at a freely accessible location; d. winding-on means forconveying the chenille effect thread from the supply creel, forming aballoon of rotating chenille effect thread about the core thread bobbinsand winding the rotating chenille effect thread around thelongitudinally supplied first core threads; e. feed means for supplyingat least two external second core threads laterally to the wound-onchenille effect thread around the said first core threads to form atleast two two pairs of core threads composed of one first and one secondcore thread; f. means for severing the turns of the chenille effectmaterial between the pairs of core threads; and g. twisting andwinding-on means for twisting each pair of core threads into a chenilleyarn.
 2. A machine for the manufacture of chenille yarn comprising a. atleast two core thread bobbins maintained in a fixed position; b. meansfor longitudinally supplying at least two first core threads from thecore thread bobbins; c. a supply creel for chenille effect thread; d.winding-on means for conveying the chenille effect thread from thesupply creeL, forming a balloon of rotating chenille effect thread aboutthe core thread bobbins and winding the rotating chenille effect threadaround the longitudinally supplied first core threads; e. feed means forsupplying at least two external second core threads laterally to thewound-on chenille effect thread around the said first core threads toform at least two pairs of core threads composed of one first and onesecond core thread; f. means for severing the turns of the chenilleeffect material between the pairs of core threads; and g. twisting andwinding-on means for twisting each pair of core threads into a chenilleyarn, the winding-on means comprising a tubular rotatable winding-onspindle, bearing devices supporting the winding-on spindle for forrotation, and drive means for driving the winding-on spindle inrotation; at least one duct in the winding-on spindle debouching at oneend of the said spindle eccentrically of the said spindle; at least onefirst thread guide mounted eccentrically at an opposite end of the saidwinding-on spindle and laterally of the core thread bobbins so that achenille effect thread guided through the first thread guide and throughthe said duct is rotated about the core thread bobbins by rotation ofthe winding-on spindle; a fixed second thread guide axially situatedspaced from the first thread guide so that a chenille effect threadguided through the fixed second thread guide to the laterally disposedrotatable first thread guide will form a balloon shape on rotation ofthe first thread guide around the core thread bobbins; a tubular guidespindle for the first core threads mounted in the tubular winding-onspindle to be relatively rotatable thereto; means for maintaining thetubular guide spindle stationary relative to the machine on rotation ofthe winding-on spindle; a mandrel on one end of the guide spindleprojecting from the tubular winding-on spindle at the end debouching thechenille effect material so that first core threads guided through thetubular guide spindle lay against the mandrel and debouching chenilleeffect thread is wound by the rotation of the winding-on spindle aroundthe mandrel and the first core threads; a core-carrying plate mounted onan opposite end of the spindle for the first core thread bobbins; andfeed means for supplying the said second core threads to the mandrellaterally of the wound-on chenille effect thread.
 3. A machine accordingto claim 2 wherein the guide spindle is mounted for idling within thewinding-on spindle.
 4. A machine according to claim 3 wherein the guidespindle is prolonged upstream of the wound-on chenille effect threadaffording means for securing to a stationary part of the machine.
 5. Amachine according to claim 4 wherein the means for securing the guidespindle are constituted by prolongation of the mandrel for winding-onthe chenille effect thread.
 6. A machine according to claim 3 whereinthe guide spindle is maintained stationary by magnetic orelectromagnetic means exerting a force between the assembly of the guidespindle and the core-carrying plate, and a part fixed to the machinewhich surrounds the said assembly for maintaining the latter stationary,there being a continuous annular space thereabout, through which annularspace the chenille effect material balloon rotates freely.
 7. A machineaccording to claim 6 wherein the core-carrying plate is provided with atleast one permanent magnet, associated, when magnetic attraction takesplace, with a complementary magnet secured to the fixed part surroundingthe assembly.
 8. A machine according to claim 7 wherein the fixed partsurrounding the core-carrying plate assembly is in the form of anannular body.
 9. A machine according to claim 8 wherein the annular bodysurrounding the core-carrying plate is prolonged upwardly to afford aprotective tube and guide for the balloon.
 10. A machine according toclaim 9 wherein the core-carRying plate has a tubular body surroundingthe core bobbins and radially separated from the balloon-guiding tube,forming with the said guide tube an annular space for passage of therotating balloon.
 11. A machine according to claim 2 wherein feed meansfor the external second core threads is, at each side of the wind-onmandrel, an endless belt maintained under tension between a rollerconnected with means for driving in rotation and a fixed guide guidingit adjacent the side of the mandrel, against which belt there is applieda first roller of a pair of drive rollers for entraining the severed andseparated chenille yarns to the associated twisting devices.
 12. Amachine according to claim 11 which includes tensioning means appliedagainst the inlet run of the belt at the guide, and which formsconveying means for the external second core thread.
 13. A machineaccording to claim 11 wherein the assembly of the roller and endlessbelt guide is mounted to be adjustable for varying the working positionof the belt guide relative to the mandrel.
 14. A machine according toclaim 13 wherein the first roller of the drive pair is also adjustablefor maintaining the coupling thereof with the roller for actuating thebelt and the second roller of the drive pair.
 15. A machine according toclaim 1 wherein the means for severing the chenille effect material area pair of circular knives, mutually associated and driven in rotation,and which are operative in a longitudinal slot formed in the end of themandrel, being mounted in supports the position of which is adjustablerelative thereto.
 16. A method of manufacturing chenille yarn whichincludes supplying at least two first core threads from bobbins,supplying at least one chenille effect thread from a freely accessiblefixed bobbin situated remote from the core thread bobbins, causing thechenille effect thread to rotate around the core thread bobbins in aballoon-like manner and applying the rotating thread around the twofirst core threads to form a spiral, supplying at least two second corethreads to the outer surface of the spiral so as to form at least twopair of core threads comprising one first thread and one second thread,severing the spiral chenille effect thread between the two pairs of corethreads and twisting the pairs of core threads to form two chenilleyarns.